Penofin Stain and Sealer offers an easy to use, quality solution to protect and enhance the beauty of wood. Penofin Stain and Sealer is a penetrating, oil based, transparent wood stain and sealer in one. It has been formulated for both ease of application and to protect and enhance the natural beauty of wood. Penofin Stain an Sealer can withstand rain and water within minutes of application, be applied in high temperatures and direct sunlight and is easy to maintain, with no sanding or stripping required for re-application.